Eh, technological artifacts. .45-70 and .303 British were artifacts of their time, and in those contexts, they were reasonable- the .45-70 for a brief window of time at the dawn of the modern era, the .303 a similar artifact but of far more utility and adaptability, arguably near-equivalent to its successors. The .30-06 and the 7.92 Mauser rounds were the ultimate fruits of this development tree and were excellent in all aspects of performance by the metrics of power, accuracy and efficiency in "combat"…the vast majority of which was through the lens of machine guns and long-range shooting from platforms like aircraft and tanks. If it was only rifles, I think we'dMy